Journal of Colloid and Interface Science最新文献_第4页

Ce-doped NiCoP/ Co3O4 composite Nanostructures on Ni foam and their enhanced performance for water and urea electrolysis

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137542

Zhe Liu , Soyeon Lee , Tao Zhou , Jiwoong Yang , Taekyung Yu

Producing hydrogen through freshwater or urea-containing wastewater electrolysis using renewable electricity requires multifunctional catalysts made from nonprecious metals. In the current study, we disclose the rational fabrication of oxide/phosphide heterostructure nanorods with rare earth metal doping on nickel foam (NF), denoted Ce-NiCoP/Co₃O₄/NF, via partial phosphorization. Benefiting from intrinsic interface formation and doping effects, the interaction between the coupling components facilitates electron transfer, optimizing the electronic configuration of the Ce-NiCoP/Co₃O₄/NF catalyst. Ce-NiCoP/Co₃O₄/NF exhibited a competitive potential of − 0.151 V for hydrogen evolution reaction, 1.50 V for oxygen evolution reaction (OER), and 1.33 V (versus reversible hydrogen electrode) toward urea oxidation reactions (UOR) at 100 mA cm⁻². In situ Fourier-transform infrared combined with electrochemical analysis detects *OOH and *O₂⁻ intermediates in OER, as well as CO₃²⁻ and CNO⁻ ions, alongside the N–H vibration in UOR, providing deeper insight into the OER and UOR mechanisms on the Ce-NiCoP/Co₃O₄/NF. More importantly, the catalyst exhibited an activity of 20 mA cm⁻² requiring voltages as low as 1.52 V for unassisted water splitting and 1.27 V for urea-assisted electrolysis.

{"title":"Ce-doped NiCoP/ Co3O4 composite Nanostructures on Ni foam and their enhanced performance for water and urea electrolysis","authors":"Zhe Liu , Soyeon Lee , Tao Zhou , Jiwoong Yang , Taekyung Yu","doi":"10.1016/j.jcis.2025.137542","DOIUrl":"10.1016/j.jcis.2025.137542","url":null,"abstract":"<div><div>Producing hydrogen through freshwater or urea-containing wastewater electrolysis using renewable electricity requires multifunctional catalysts made from nonprecious metals. In the current study, we disclose the rational fabrication of oxide/phosphide heterostructure nanorods with rare earth metal doping on nickel foam (NF), denoted Ce-NiCoP/Co<sub>3</sub>O<sub>4</sub>/NF, via partial phosphorization. Benefiting from intrinsic interface formation and doping effects, the interaction between the coupling components facilitates electron transfer, optimizing the electronic configuration of the Ce-NiCoP/Co<sub>3</sub>O<sub>4</sub>/NF catalyst. Ce-NiCoP/Co<sub>3</sub>O<sub>4</sub>/NF exhibited a competitive potential of − 0.151 V for hydrogen evolution reaction, 1.50 V for oxygen evolution reaction (OER), and 1.33 V (versus reversible hydrogen electrode) toward urea oxidation reactions (UOR) at 100 mA cm<sup>−2</sup>. In situ Fourier-transform infrared combined with electrochemical analysis detects *OOH and *O<sub>2</sub><sup>−</sup> intermediates in OER, as well as CO<sub>3</sub><sup>2−</sup> and CNO<sup>−</sup> ions, alongside the N–H vibration in UOR, providing deeper insight into the OER and UOR mechanisms on the Ce-NiCoP/Co<sub>3</sub>O<sub>4</sub>/NF. More importantly, the catalyst exhibited an activity of 20 mA cm<sup>−2</sup> requiring voltages as low as 1.52 V for unassisted water splitting and 1.27 V for urea-assisted electrolysis.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"692 ","pages":"Article 137542"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergizing ternary CoMoW alloy with CeO2 for enhancing electrocatalytic hydrogen evolution

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137556

Wen Wu , Lingmiao Fang , Yawen Xuan , Shichao Sun , Di Li , Deli Jiang

Integrating metal materials with metal oxides to construct a multi-component electrocatalyst represents an effective strategy to develop high-performance electrocatalysts for hydrogen evolution reaction (HER). In this work, we design and synthesize a synergistic heterogeneous electrocatalyst comprising of CoMoW ternary metal alloys and ceria (CeO₂) nanosheet supported on nickel foam (NF) via a facile and fast electrodeposition method. The strong electronic interaction between CoMoW and CeO₂ not only improves charge transfer but also promotes water dissociation and optimizes hydrogen adsorption capability, thereby improving the kinetics of HER. Benefiting from this properly designed interface, the optimized CoMoW–CeO₂/NF delivered a low overpotential of only 35.25 mV at 10 mA cm⁻² for HER, which is superior to many reported similar catalysts. This work offers an effective approach for the design and construction of high-performance heterogeneous electrocatalyst comprising of ternary alloys and metal oxides.

{"title":"Synergizing ternary CoMoW alloy with CeO2 for enhancing electrocatalytic hydrogen evolution","authors":"Wen Wu , Lingmiao Fang , Yawen Xuan , Shichao Sun , Di Li , Deli Jiang","doi":"10.1016/j.jcis.2025.137556","DOIUrl":"10.1016/j.jcis.2025.137556","url":null,"abstract":"<div><div>Integrating metal materials with metal oxides to construct a multi-component electrocatalyst represents an effective strategy to develop high-performance electrocatalysts for hydrogen evolution reaction (HER). In this work, we design and synthesize a synergistic heterogeneous electrocatalyst comprising of CoMoW ternary metal alloys and ceria (CeO<sub>2</sub>) nanosheet supported on nickel foam (NF) via a facile and fast electrodeposition method. The strong electronic interaction between CoMoW and CeO<sub>2</sub> not only improves charge transfer but also promotes water dissociation and optimizes hydrogen adsorption capability, thereby improving the kinetics of HER. Benefiting from this properly designed interface, the optimized CoMoW–CeO<sub>2</sub>/NF delivered a low overpotential of only 35.25 mV at 10 mA cm<sup>−2</sup> for HER, which is superior to many reported similar catalysts. This work offers an effective approach for the design and construction of high-performance heterogeneous electrocatalyst comprising of ternary alloys and metal oxides.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"692 ","pages":"Article 137556"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive microgel films with enhancing cohesion, adhesion, and wettability for robust and reversible bonding in cultural relic restoration

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137558

Jiajia Wan , Menglin Tian , Xiao Wang , Mingwang Pan , Zhicheng Pan

Hydrogel adhesives hold significant promise for applications in flexible intelligent systems and biomedical engineering. However, reconciling high toughness with strong, durable, and repeatable interfacial adhesion remains a daunting challenge. Herein, a new strategy was proposed involving the utilization of physically crosslinked microgels to fabricate a high-toughness adhesive microgel film, optimizing cohesion, adhesion, and wettability to significantly enhance interfacial adhesion performance. The microgels were synthesized using polyzwitterions and acrylic acid through inverse emulsion method, leveraging on their intrinsic ability to readily form abundant non-covalent interactions. The resultant microgel-based adhesive film, formed through physical crosslinking and chain entanglement mechanisms, exhibited a tensile strength of 0.34 MPa, an exceptional elongation at break of 1107.79 %, and a toughness of 2842.17 kJ/m³. Furthermore, this adhesive film demonstrated a remarkable adhesive strength of 1740.9 kPa, with its adhesion performance retaining stable and effective even under extreme environmental conditions, including elevated temperatures and complete submersion in aqueous environments. In contrast to conventional hydrogel adhesives, this microgel system achieves superior mechanical robustness, interfacial adhesion, and environmental resistance, highlighting their promising potential candidate for applications in cultural heritage conservation.

{"title":"Adaptive microgel films with enhancing cohesion, adhesion, and wettability for robust and reversible bonding in cultural relic restoration","authors":"Jiajia Wan , Menglin Tian , Xiao Wang , Mingwang Pan , Zhicheng Pan","doi":"10.1016/j.jcis.2025.137558","DOIUrl":"10.1016/j.jcis.2025.137558","url":null,"abstract":"<div><div>Hydrogel adhesives hold significant promise for applications in flexible intelligent systems and biomedical engineering. However, reconciling high toughness with strong, durable, and repeatable interfacial adhesion remains a daunting challenge. Herein, a new strategy was proposed involving the utilization of physically crosslinked microgels to fabricate a high-toughness adhesive microgel film, optimizing cohesion, adhesion, and wettability to significantly enhance interfacial adhesion performance. The microgels were synthesized using polyzwitterions and acrylic acid through inverse emulsion method, leveraging on their intrinsic ability to readily form abundant non-covalent interactions. The resultant microgel-based adhesive film, formed through physical crosslinking and chain entanglement mechanisms, exhibited a tensile strength of 0.34 MPa, an exceptional elongation at break of 1107.79 %, and a toughness of 2842.17 kJ/m<sup>3</sup>. Furthermore, this adhesive film demonstrated a remarkable adhesive strength of 1740.9 kPa, with its adhesion performance retaining stable and effective even under extreme environmental conditions, including elevated temperatures and complete submersion in aqueous environments. In contrast to conventional hydrogel adhesives, this microgel system achieves superior mechanical robustness, interfacial adhesion, and environmental resistance, highlighting their promising potential candidate for applications in cultural heritage conservation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137558"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precise modulation of nickel-molybdenum alloy (MoNi4)/molybdenum dioxide nanowires via a ternary nickel-cobalt-iron complex for enhanced electrochemical overall water splitting

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137560

Peng Zuo , Fanfan Liu , Fuyan Zhao , Xiaofei Zhang , Yun Li , Kuangyong Xu , Xiaowei Fang , Zhiwei Zhang , Yun Shen , Jinyun Liu , Yefeng Liu

Developing renewable and clean energy technologies necessitates the design of efficient bifunctional catalysts that can facilitate electrochemical water splitting without relying on inert metals. This study presents a novel three-step strategy for fabricating nickel cobalt iron (NiCoFe)-modified nickel-molybdenum alloy/molybdenum dioxide (MoNi₄/MoO₂) nanowires on nickel foam (NF) substrates, denoted as NiCoFe-MoNi₄/MoO₂/NF. The synthesized catalyst demonstrates exceptional performance, achieving an impressively low overpotential (13 mV) at 10 mA·cm⁻² current density for the hydrogen evolution reaction (HER) and 230 mV at 50 mA·cm⁻² for the oxygen evolution reaction (OER). Its performance surpasses many noble-metal catalysts, achieving overall water splitting at just 1.51 V under 50 mA·cm⁻². The distinctive one-dimensional (1D) nanostructure and synergistic interplay between the NiCoFe complex and the MoNi₄/MoO₂ framework enhance mass transfer, expose additional active sites, and enhance intrinsic activity, contributing to outstanding efficiency. Incorporating cobalt (Co) and iron (Fe) into the ternary complex greatly improved the efficiencies of both HER and OER, providing a promising approach for developing high-performance, cost-effective bifunctional electrocatalysts and promoting advancements in sustainable energy conversion technologies.

{"title":"Precise modulation of nickel-molybdenum alloy (MoNi4)/molybdenum dioxide nanowires via a ternary nickel-cobalt-iron complex for enhanced electrochemical overall water splitting","authors":"Peng Zuo , Fanfan Liu , Fuyan Zhao , Xiaofei Zhang , Yun Li , Kuangyong Xu , Xiaowei Fang , Zhiwei Zhang , Yun Shen , Jinyun Liu , Yefeng Liu","doi":"10.1016/j.jcis.2025.137560","DOIUrl":"10.1016/j.jcis.2025.137560","url":null,"abstract":"<div><div>Developing renewable and clean energy technologies necessitates the design of efficient bifunctional catalysts that can facilitate electrochemical water splitting without relying on inert metals. This study presents a novel three-step strategy for fabricating nickel cobalt iron (NiCoFe)-modified nickel-molybdenum alloy/molybdenum dioxide (MoNi<sub>4</sub>/MoO<sub>2</sub>) nanowires on nickel foam (NF) substrates, denoted as NiCoFe-MoNi<sub>4</sub>/MoO<sub>2</sub>/NF. The synthesized catalyst demonstrates exceptional performance, achieving an impressively low overpotential (13 mV) at 10 mA·cm<sup>−2</sup> current density for the hydrogen evolution reaction (HER) and 230 mV at 50 mA·cm<sup>−2</sup> for the oxygen evolution reaction (OER). Its performance surpasses many noble-metal catalysts, achieving overall water splitting at just 1.51 V under 50 mA·cm<sup>−2</sup>. The distinctive one-dimensional (1D) nanostructure and synergistic interplay between the NiCoFe complex and the MoNi<sub>4</sub>/MoO<sub>2</sub> framework enhance mass transfer, expose additional active sites, and enhance intrinsic activity, contributing to outstanding efficiency. Incorporating cobalt (Co) and iron (Fe) into the ternary complex greatly improved the efficiencies of both HER and OER, providing a promising approach for developing high-performance, cost-effective bifunctional electrocatalysts and promoting advancements in sustainable energy conversion technologies.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137560"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering cobalt phosphide with anion vacancy and carbon shell for kinetically enhanced lithium-sulfur batteries

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137563

Baihui Chen, Lirong Zhang, Ye Tao, Jingui Han, Di Wang, Han Wang, Lili Wu, Xinzhi Ma, Xitian Zhang

The widespread adoption of lithium-Sulfur (Li-S) batteries is significantly hindered by the well-known “shuttle effect” and the sluggish conversion kinetics of sulfur species. In this study, cobalt phosphide (CoP) nanoparticles are engineered with phosphorus vacancies (P_v) and a carbon shell (CoP_v@C) to effectively anchor polysulfides (LiPSs) and promote their conversion. The introduction of P_v notably enhances the binding energy between CoP and LiPSs, facilitating the subsequent cleavage of the SS bond in the Li₂S₆ molecule. The carbon shell further aids in the chemical adsorption of LiPSs by generating a space charge region, while simultaneously shielding CoP nanoparticles from direct exposure to oxidative conditions during charge/discharge cycles. On the surface of CoP_v@C nanofibers, the nucleation of Li₂S exhibits rapid liquid–solid conversion dynamics, adhering to a three-dimensional progressive nucleation model. Consequently, in our case, Li-S batteries assembled with CoP_v@C-modified separators exhibit an initial capacity of 1,536 mAh g⁻¹ at 0.1 C. Significantly, Li-S batteries can afford 4 C discharge/charge along with a superior 0.019 % decline rate. These findings position CoP_v@C nanofibers as a promising material for advanced Li-S batteries and offer novel insights into the design of electrocatalysts and separator engineering for high-performance Li-S batteries.

{"title":"Engineering cobalt phosphide with anion vacancy and carbon shell for kinetically enhanced lithium-sulfur batteries","authors":"Baihui Chen, Lirong Zhang, Ye Tao, Jingui Han, Di Wang, Han Wang, Lili Wu, Xinzhi Ma, Xitian Zhang","doi":"10.1016/j.jcis.2025.137563","DOIUrl":"10.1016/j.jcis.2025.137563","url":null,"abstract":"<div><div>The widespread adoption of lithium-Sulfur (Li-S) batteries is significantly hindered by the well-known “shuttle effect” and the sluggish conversion kinetics of sulfur species. In this study, cobalt phosphide (CoP) nanoparticles are engineered with phosphorus vacancies (P<sub>v</sub>) and a carbon shell (CoP<sub>v</sub>@C) to effectively anchor polysulfides (LiPSs) and promote their conversion. The introduction of P<sub>v</sub> notably enhances the binding energy between CoP and LiPSs, facilitating the subsequent cleavage of the S<img>S bond in the Li<sub>2</sub>S<sub>6</sub> molecule. The carbon shell further aids in the chemical adsorption of LiPSs by generating a space charge region, while simultaneously shielding CoP nanoparticles from direct exposure to oxidative conditions during charge/discharge cycles. On the surface of CoP<sub>v</sub>@C nanofibers, the nucleation of Li<sub>2</sub>S exhibits rapid liquid–solid conversion dynamics, adhering to a three-dimensional progressive nucleation model. Consequently, in our case, Li-S batteries assembled with CoP<sub>v</sub>@C-modified separators exhibit an initial capacity of 1,536 mAh g<sup>−1</sup> at 0.1 C. Significantly, Li-S batteries can afford 4 C discharge/charge along with a superior 0.019 % decline rate. These findings position CoP<sub>v</sub>@C nanofibers as a promising material for advanced Li-S batteries and offer novel insights into the design of electrocatalysts and separator engineering for high-performance Li-S batteries.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137563"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Marine-inspired near-infrared-activated multifunctional hydrogel with immunomodulatory properties for multidrug-resistant bacterial infected wound healing

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137562

Zhe Hao , Fanghua Zhang , Lining Chen , Hongyan Zhang , Huajie Pang , Wendong Liu , Jinzheng Liu , Ruizhong Zhang , Xiyan Li , Libing Zhang

Multidrug-resistant (MDR) bacterial infections in skin wounds have become a critical medical challenge due to the diminishing effectiveness of available antibiotics. Persistent bacterial infections, excessive reactive oxygen and nitrogen species (ROS/RNS), and prolonged inflammatory responses significantly impede the wound healing process. To address these challenges, we propose a marine-inspired multifunctional 3AGM hydrogel designed to provide comprehensive antibacterial action, mitigate oxidative stress, and promote wound healing throughout the treatment process. The hydrogel features a cross-linked network of acrylic acid and acrylamide, incorporating natural melanin nanoparticles (MNPs) extracted from cuttlefish ink and polydopamine nanoparticles (APDA) polymerized by l-arginine. Gallium ions (Ga³⁺) serve as both ionic crosslinkers and antibacterial agents. The MNPs endow the hydrogel with controllable photothermal therapeutic capabilities, and in combination with Ga³⁺, provide synergistic antibacterial treatment for infected wounds. The integration of APDA imparts strong antioxidant activity to 3AGM hydrogel, effectively reducing oxidative stress at the wound site and promoting sustained tissue regeneration. The 3AGM hydrogel demonstrates promising potential in promoting wound healing for skin infections caused by MDR bacteria.

{"title":"Marine-inspired near-infrared-activated multifunctional hydrogel with immunomodulatory properties for multidrug-resistant bacterial infected wound healing","authors":"Zhe Hao , Fanghua Zhang , Lining Chen , Hongyan Zhang , Huajie Pang , Wendong Liu , Jinzheng Liu , Ruizhong Zhang , Xiyan Li , Libing Zhang","doi":"10.1016/j.jcis.2025.137562","DOIUrl":"10.1016/j.jcis.2025.137562","url":null,"abstract":"<div><div>Multidrug-resistant (MDR) bacterial infections in skin wounds have become a critical medical challenge due to the diminishing effectiveness of available antibiotics. Persistent bacterial infections, excessive reactive oxygen and nitrogen species (ROS/RNS), and prolonged inflammatory responses significantly impede the wound healing process. To address these challenges, we propose a marine-inspired multifunctional 3AGM hydrogel designed to provide comprehensive antibacterial action, mitigate oxidative stress, and promote wound healing throughout the treatment process. The hydrogel features a cross-linked network of acrylic acid and acrylamide, incorporating natural melanin nanoparticles (MNPs) extracted from cuttlefish ink and polydopamine nanoparticles (APDA) polymerized by <span>l</span>-arginine. Gallium ions (Ga<sup>3+</sup>) serve as both ionic crosslinkers and antibacterial agents. The MNPs endow the hydrogel with controllable photothermal therapeutic capabilities, and in combination with Ga<sup>3+</sup>, provide synergistic antibacterial treatment for infected wounds. The integration of APDA imparts strong antioxidant activity to 3AGM hydrogel, effectively reducing oxidative stress at the wound site and promoting sustained tissue regeneration. The 3AGM hydrogel demonstrates promising potential in promoting wound healing for skin infections caused by MDR bacteria.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137562"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking Hidden Information in Sparse Small-Angle Neutron Scattering Measurements

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137554

Chi-Huan Tung , Sidney Yip , Guan-Rong Huang , Lionel Porcar , Yuya Shinohara , Bobby G. Sumpter , Lijie Ding , Changwoo Do , Wei-Ren Chen

Hypothesis

Small-Angle Neutron Scattering (SANS) is a powerful technique for studying soft matter systems such as colloids, polymers, and lyotropic phases, providing nanoscale structural insights. However, its effectiveness is limited by low neutron flux, leading to long acquisition times and noisy data. We hypothesize that Bayesian statistical inference using Gaussian Process Regression (GPR) can reconstruct high-fidelity scattering data from sparse measurements by leveraging intensity smoothness and continuity.

Experiments and Simulations

The method was benchmarked computationally and validated through SANS experiments on various soft matter systems, including wormlike micelles, colloidal suspensions, polymeric structures, and lyotropic phases. GPR-based inference was applied to both experimental and synthetic data to evaluate its effectiveness in noise reduction and intensity reconstruction.

Findings

GPR significantly enhances SANS data quality and therefore reducing measurement times by up to two orders of magnitude. This cost-effective approach maximizes experimental efficiency, enabling high-throughput studies and real-time monitoring of dynamic systems. It is particularly beneficial for weakly scattering and time-sensitive studies. Beyond SANS, this framework applies to other low-SNR techniques, including laboratory-based small-angle X-ray scattering and various dynamical scattering methods. Furthermore, it offers transformative potential for compact neutron sources, enhancing their viability for structural analysis in resource-limited settings.

{"title":"Unlocking Hidden Information in Sparse Small-Angle Neutron Scattering Measurements","authors":"Chi-Huan Tung , Sidney Yip , Guan-Rong Huang , Lionel Porcar , Yuya Shinohara , Bobby G. Sumpter , Lijie Ding , Changwoo Do , Wei-Ren Chen","doi":"10.1016/j.jcis.2025.137554","DOIUrl":"10.1016/j.jcis.2025.137554","url":null,"abstract":"<div><div><em>Hypothesis</em></div><div>Small-Angle Neutron Scattering (SANS) is a powerful technique for studying soft matter systems such as colloids, polymers, and lyotropic phases, providing nanoscale structural insights. However, its effectiveness is limited by low neutron flux, leading to long acquisition times and noisy data. We hypothesize that Bayesian statistical inference using Gaussian Process Regression (GPR) can reconstruct high-fidelity scattering data from sparse measurements by leveraging intensity smoothness and continuity.</div><div><em>Experiments and Simulations</em></div><div>The method was benchmarked computationally and validated through SANS experiments on various soft matter systems, including wormlike micelles, colloidal suspensions, polymeric structures, and lyotropic phases. GPR-based inference was applied to both experimental and synthetic data to evaluate its effectiveness in noise reduction and intensity reconstruction.</div><div><em>Findings</em></div><div>GPR significantly enhances SANS data quality and therefore reducing measurement times by up to two orders of magnitude. This cost-effective approach maximizes experimental efficiency, enabling high-throughput studies and real-time monitoring of dynamic systems. It is particularly beneficial for weakly scattering and time-sensitive studies. Beyond SANS, this framework applies to other low-SNR techniques, including laboratory-based small-angle X-ray scattering and various dynamical scattering methods. Furthermore, it offers transformative potential for compact neutron sources, enhancing their viability for structural analysis in resource-limited settings.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"692 ","pages":"Article 137554"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-atom catalysts confined in shell layer achieved by a modified top-down strategy for efficient CO2 reduction

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137566

Dong Wei , Aihao Xu , Xiangyu Chen , Junjie Ma , Fang Huang , Haoran Wu , Yong Liu , Ruquan Ye , Minghui Zhu , Jing Xu

High-temperature pyrolysis is a primary method for synthesizing single-atom catalysts (SACs). However, this method accelerates the migration of metal atoms within the solid support, leading to low atom utilization. Herein, we report a novel top-down synthesis strategy wherein surface-sintered nickel sulfide (NiS₂) nanoparticles (NPs) are in situ atomized into single atoms, achieving confinement of the single-atom catalyst within the shell layer and synthesizing a high-performance single-atom catalyst. Systematic investigations indicate that driven by strong interactions between metal atoms and the support, the NiS₂ NPs on the surface of the support atomize into single Ni atoms, which are predominantly distributed on the support surface, thus enhancing the accessibility of the active sites. Furthermore, theoretical calculations indicate that introducing S atoms into the second coordination shell around Ni atoms significantly reduces the activation energy of the CO₂ reduction reaction, thereby enhancing the catalytic performance of the single-atom catalyst. In the flow cell, the Ni single-atom catalyst achieving nearly 100% Faradaic efficiency for CO (FE_CO) over a wide potential range of −0.5 to −1.3 V versus reversible hydrogen electrode (vs. RHE). At −1.6 V vs. RHE, the partial current density for CO reaches a maximum of 709 mA cm⁻² (turnover frequency of 28.67 s⁻¹) with a FE_CO of 95.9%.

高温热解是合成单原子催化剂（SAC）的主要方法。然而，这种方法会加速金属原子在固体载体内的迁移，导致原子利用率低下。在本文中，我们报告了一种自上而下的新型合成策略，即将表面烧结的硫化镍（NiS2）纳米颗粒（NPs）原位原子化为单原子，实现了单原子催化剂在壳层内的封闭，合成出高性能的单原子催化剂。系统研究表明，在金属原子与载体之间强烈相互作用的驱动下，载体表面的 NiS2 NPs 原子化为单个 Ni 原子，这些单个 Ni 原子主要分布在载体表面，从而提高了活性位点的可达性。此外，理论计算表明，将 S 原子引入 Ni 原子周围的第二配位层可显著降低 CO2 还原反应的活化能，从而提高单原子催化剂的催化性能。在流动池中，相对于可逆氢电极（vs. RHE），镍单原子催化剂在 -0.5 至 -1.3 V 的宽电位范围内对 CO 的法拉第效率（FECO）接近 100%。在-1.6 V（相对于可逆氢电极）时，一氧化碳的部分电流密度达到最大值 709 mA cm-2（周转频率为 28.67 s-1），FECO 为 95.9%。

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引用次数: 0

Sulfur dioxide-releasing nanomotors improve the therapeutic effect of liver fibrosis by restoring the fenestrae of sinusoids 释放二氧化硫的纳米马达通过恢复窦道改善肝纤维化的治疗效果

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137557

Lin Chen, Zhengwei Chen, Di Shi, Haifeng Ke, Chun Mao, Mimi Wan

The dual barriers formed by the capillarized liver sinusoids and excessive deposited extracellular matrix (ECM) significantly impede the retention of therapeutic agents in the fibrotic liver. Currently, there are limited reports on strategies capable of simultaneously overcoming these barriers. Here, we propose sulfur dioxide (SO₂)-releasing nanomotors based on endogenous in vivo reactions to restore the fenestrae of sinusoids and degrade ECM by activating the endogenous signaling pathway to improve the retention of therapeutic agents in the damaged liver. These nanomotors leverage the specific enzyme concentration gradient in damaged liver tissue as a chemoattractant signal, guiding their targeted delivery. The nanomotors incorporate an l-cysteine-based substrate that, upon enzymatic catalysis, generates SO₂. The released SO₂ can upregulate the cyclic guanosine monophosphate expression to restore the fenestrated phenotype of liver sinusoidal endothelial cells. Concurrently, SO₂ can stimulate the endogenous nitric oxide production to induce matrix metalloproteinase-1 activation to facilitate the collagen degradation. The animal experimental model also demonstrates the effective retention of nanomotors in damaged liver tissue and reversal of liver fibrosis.

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引用次数: 0

Electron donor-acceptor metal-organic frameworks for efficient photocatalytic reduction and oxidation 用于高效光催化还原和氧化的电子供体-受体金属有机框架

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-04-10 DOI: 10.1016/j.jcis.2025.137561

Chuanyin Tang , Han Cao , Jing Gao , Shuo Wang , Rui Liu , Bo Chen , Qingfa Si , Yongqing Xia , Shengjie Wang

It is a great challenge to obtain a broad-spectrum light response and high redox capability in photocatalysis. Unlike the traditional process of expanding the light spectrum of a photocatalyst often leads to a decrease in oxidation or reduction potential, here we proposed a mixed-ligand strategy to improve the light response and photocatalytic redox performances simultaneously. Tetrad (4-carboxyphenyl) porphyrin (TCPP, electron donor) and N, N’-bis (5-diphenylphthalic acid)-naphthlimide (NDI, electron acceptor) were coordinated with Zr (IV) clusters to produce electron donor–acceptor (D-A) metal–organic frameworks (ML-MOFs). As photocatalysts, the ML-MOFs exhibited higher photocatalytic efficiency in the generation of nicotinamide adenine dinucleotide phosphate (NADH) in the absence of any noble metals. Refractory antibiotic tetracycline hydrochloride (TCH) was almost completely degraded within 30 min with an amazing kinetic constant of 0.08229 min⁻¹, far exceeding that of the single-ligand MOFs and other noble-metal-free photocatalysts. The experimental and theoretical evidence indicated the D-A structure in ML-MOFs achieved larger dipole moments and enlarged built-in electric fields, which greatly improved the charge separation and transfer efficiency, conferring them with boosting photocatalytic oxidation and reduction performances. This research presents a new stratagem for the preparation of advanced photocatalysts with both photocatalytic oxidation and reduction ability and makes a significant step towards energy conversion and environmental governance via photocatalysis.

在光催化过程中，如何获得宽光谱光响应和高氧化还原能力是一项巨大挑战。与传统的扩大光催化剂的光谱范围往往导致氧化或还原电位降低的做法不同，我们在此提出了一种混合配体策略，以同时提高光响应和光催化氧化还原性能。四（4-羧基苯基）卟啉（TCPP，电子供体）和 N，N'-双（5-二苯基邻苯二甲酸）-萘甲酰亚胺（NDI，电子受体）与 Zr (IV) 簇配位，生成电子供体-受体（D-A）金属有机框架（ML-MOFs）。作为光催化剂，在没有任何贵金属的情况下，ML-MOFs 在生成烟酰胺腺嘌呤二核苷酸磷酸（NADH）时表现出更高的光催化效率。难降解抗生素盐酸四环素（TCH）在 30 分钟内几乎被完全降解，其动力学常数为 0.08229 min-1，远远超过了单配体 MOFs 和其他不含贵金属的光催化剂。实验和理论证据表明，ML-MOFs 中的 D-A 结构实现了更大的偶极矩和更大的内置电场，大大提高了电荷分离和转移效率，使其具有更强的光催化氧化和还原性能。该研究为制备兼具光催化氧化和还原能力的先进光催化剂提供了新的思路，为通过光催化实现能源转换和环境治理迈出了重要一步。

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引用次数: 0